How to grow Bergenia (ber-gen-i-a) Named for Karl August von Bergen, 1704-60, German botanist (Saxifragaceae). These hardy perennial herbaceous plants with large evergreen leaves were at one time called megasea, and were at another time included with the saxifrages. The flowers which come in early spring are showy in white, pink or red-purple, borne in large heads on long stems. […]